Astronomy News. Read the latest astronomy news and articles from around the world. Space and time theory and more. Full-text, images, updated daily. ...
Asteroids with moons, which scientists call binary asteroids, are common in the solar system. A longstanding question has been how most such moons are formed. In the journal Nature, a trio of astronomers say the surprising answer is sunlight, which can increase or decrease the spin rate of an asteroid. Their findings match observations and give information important for deflecting threatening asteroids away from Earth. ...
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